After reading his Batgirl run, which instantaneously moved me from "guy who knew nothing about Stephanie Brown" to "devoted Stephanie Brown fanboy for life," I'm down with Bryan Q. Miller writing ANY book featuring a teenaged superheroine. Those teamup issues between Kara and Steph were pure bliss to read, and I really hope that Steph and Kara will eventually rekindle their friendship in the New 52.
Miller certainly wouldn't have needed to have Kara join a gang of mass murderers in order to make her more likeable, either.
So, yeah. Bryan Q. Miller? He can write Kara any day of the week as far as I'm concerned.